Electrochemically activated spinel manganese oxide for rechargeable aqueous aluminum battery

Abstract

The instability of the host structure of cathode materials and sluggish aluminium ion diffusion are the major challenges facing the Al-ion battery. Here the authors show Al x MnO2·nH2O as a cathode that allows for reversible Al3+ (de)intercalation in an aqueous electrolyte and impressive electrochemical performance for a battery device.